Back to EveryPatent.com
United States Patent | 5,318,293 |
Nathanson ,   et al. | June 7, 1994 |
A simple and economical spin fixture which is specially designed to be integrally molded, implanted or otherwise embedded within a solid composition ball, for example, a polymerized thermoplastic foam basketball. The fixture rotatably seats one's fingertip inside the ball to allow effortless fingertip spinning. The gripping action is secure, and yet the frictional contact surface between the rotating and stationary parts is minimized to improve the spin quality.
Inventors: | Nathanson; Theodore (Scarsdale, NY); Nathanson; Judd D. (Yonkers, NY); Caporale; James (Watertown, CT); Zoltner; Thomas J. (Denville, NJ) |
Assignee: | Douglas Products Corporation (Yonkers, NY) |
Appl. No.: | 062299 |
Filed: | May 14, 1993 |
Current U.S. Class: | 473/569; 446/236 |
Intern'l Class: | A63B 037/14; A63H 001/00 |
Field of Search: | 273/58 R,58 A,1.5 A,65 R,65 A,65 EF,DIG. 20,65 EG,58 G,58 K 446/240,236,46 384/245 |
2300362 | Oct., 1942 | Shotter | 384/245. |
3865378 | Feb., 1975 | McPhail et al. | 273/128. |
3884466 | May., 1975 | MacDonald et al. | 273/65. |
3975016 | Aug., 1976 | Bodor | 273/65. |
4040625 | Aug., 1977 | Malafronte | 446/46. |
4113257 | Sep., 1978 | Moffatt | 273/185. |
4919422 | Apr., 1990 | Ma | 273/26. |
5067923 | Nov., 1991 | de Bourbon | 446/236. |
Foreign Patent Documents | |||
2187969 | Sep., 1987 | GB | 446/46. |